답안 #945042

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
945042 2024-03-13T10:28:39 Z mannshah1211 경주 (Race) (IOI11_race) C++17
100 / 100
535 ms 98592 KB
#include "race.h"
#include "bits/stdc++.h"

int best_path(int N, int K, int H[][2], int L[]) {
  std::vector<std::vector<std::pair<long long, long long>>> adj(N);
  for (long long i = 0; i < N - 1; i++) {
  	adj[H[i][0]].push_back(std::make_pair(H[i][1], 1ll * L[i]));
  	adj[H[i][1]].push_back(std::make_pair(H[i][0], 1ll * L[i]));
  }
  std::vector<long long> sum(N, 0);
  std::vector<long long> dep(N);
  dep[0] = 1;
  auto Dfs = [&](long long u, long long p, auto&& Dfs) -> void {
  	for (auto& [v, w] : adj[u]) {
  		if (v == p) continue;
  		sum[v] = sum[u] + w;
  		dep[v] = dep[u] + 1;
  		Dfs(v, u, Dfs);
  	}
  };
  Dfs(0, -1, Dfs);
  long long mn = N + 1;
  auto small_to_large = [&](long long u, long long p, auto&& small_to_large) -> std::map<long long, long long> {
  	long long need = K + (2 * sum[u]);
  	std::map<long long, long long> here;
  	here[sum[u]] = dep[u];
  	for (auto& [v, w] : adj[u]) {
  		if (v == p) continue;
  		std::map<long long, long long> child = small_to_large(v, u, small_to_large);
  		if (here.size() < child.size()) std::swap(here, child);
  		for (auto& [s, depth] : child) {
  			if (depth == 0) continue;
  			if (here[need - s] != 0) {
  				mn = std::min(mn, here[need - s] + depth - (2 * dep[u]));
  			}
  		}
  		for (auto& [s, depth] : child) {
  			if (depth == 0) continue;
  			if (here[s] == 0) here[s] = depth;
  			else here[s] = std::min(here[s], depth);
  		}
  	}
  	return here;
  };
  small_to_large(0, -1, small_to_large);
  if (mn == N + 1) return -1;
  else return (int) mn;
}
# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 2392 KB Output is correct
2 Correct 1 ms 2396 KB Output is correct
3 Correct 1 ms 2396 KB Output is correct
4 Correct 1 ms 2396 KB Output is correct
5 Correct 1 ms 2396 KB Output is correct
6 Correct 1 ms 2396 KB Output is correct
7 Correct 1 ms 2392 KB Output is correct
8 Correct 0 ms 2396 KB Output is correct
9 Correct 1 ms 2396 KB Output is correct
10 Correct 1 ms 2392 KB Output is correct
11 Correct 1 ms 2392 KB Output is correct
12 Correct 1 ms 2396 KB Output is correct
13 Correct 1 ms 2396 KB Output is correct
14 Correct 1 ms 2396 KB Output is correct
15 Correct 1 ms 2396 KB Output is correct
16 Correct 1 ms 2396 KB Output is correct
17 Correct 0 ms 2396 KB Output is correct
18 Correct 1 ms 2396 KB Output is correct
# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 2392 KB Output is correct
2 Correct 1 ms 2396 KB Output is correct
3 Correct 1 ms 2396 KB Output is correct
4 Correct 1 ms 2396 KB Output is correct
5 Correct 1 ms 2396 KB Output is correct
6 Correct 1 ms 2396 KB Output is correct
7 Correct 1 ms 2392 KB Output is correct
8 Correct 0 ms 2396 KB Output is correct
9 Correct 1 ms 2396 KB Output is correct
10 Correct 1 ms 2392 KB Output is correct
11 Correct 1 ms 2392 KB Output is correct
12 Correct 1 ms 2396 KB Output is correct
13 Correct 1 ms 2396 KB Output is correct
14 Correct 1 ms 2396 KB Output is correct
15 Correct 1 ms 2396 KB Output is correct
16 Correct 1 ms 2396 KB Output is correct
17 Correct 0 ms 2396 KB Output is correct
18 Correct 1 ms 2396 KB Output is correct
19 Correct 1 ms 2392 KB Output is correct
20 Correct 1 ms 2396 KB Output is correct
21 Correct 2 ms 2652 KB Output is correct
22 Correct 2 ms 2652 KB Output is correct
23 Correct 2 ms 2736 KB Output is correct
24 Correct 2 ms 2652 KB Output is correct
25 Correct 2 ms 2896 KB Output is correct
26 Correct 2 ms 2652 KB Output is correct
27 Correct 1 ms 2392 KB Output is correct
28 Correct 2 ms 2652 KB Output is correct
29 Correct 2 ms 2652 KB Output is correct
30 Correct 2 ms 2492 KB Output is correct
31 Correct 2 ms 2652 KB Output is correct
32 Correct 2 ms 2536 KB Output is correct
33 Correct 3 ms 2652 KB Output is correct
34 Correct 1 ms 2652 KB Output is correct
35 Correct 2 ms 2652 KB Output is correct
36 Correct 1 ms 2652 KB Output is correct
37 Correct 2 ms 2652 KB Output is correct
38 Correct 2 ms 2652 KB Output is correct
# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 2392 KB Output is correct
2 Correct 1 ms 2396 KB Output is correct
3 Correct 1 ms 2396 KB Output is correct
4 Correct 1 ms 2396 KB Output is correct
5 Correct 1 ms 2396 KB Output is correct
6 Correct 1 ms 2396 KB Output is correct
7 Correct 1 ms 2392 KB Output is correct
8 Correct 0 ms 2396 KB Output is correct
9 Correct 1 ms 2396 KB Output is correct
10 Correct 1 ms 2392 KB Output is correct
11 Correct 1 ms 2392 KB Output is correct
12 Correct 1 ms 2396 KB Output is correct
13 Correct 1 ms 2396 KB Output is correct
14 Correct 1 ms 2396 KB Output is correct
15 Correct 1 ms 2396 KB Output is correct
16 Correct 1 ms 2396 KB Output is correct
17 Correct 0 ms 2396 KB Output is correct
18 Correct 1 ms 2396 KB Output is correct
19 Correct 117 ms 14100 KB Output is correct
20 Correct 117 ms 15140 KB Output is correct
21 Correct 111 ms 14572 KB Output is correct
22 Correct 96 ms 15204 KB Output is correct
23 Correct 162 ms 16252 KB Output is correct
24 Correct 105 ms 14780 KB Output is correct
25 Correct 74 ms 31344 KB Output is correct
26 Correct 69 ms 45140 KB Output is correct
27 Correct 171 ms 25640 KB Output is correct
28 Correct 228 ms 98592 KB Output is correct
29 Correct 213 ms 96812 KB Output is correct
30 Correct 145 ms 25936 KB Output is correct
31 Correct 141 ms 25936 KB Output is correct
32 Correct 168 ms 25960 KB Output is correct
33 Correct 205 ms 25624 KB Output is correct
34 Correct 375 ms 51280 KB Output is correct
# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 2392 KB Output is correct
2 Correct 1 ms 2396 KB Output is correct
3 Correct 1 ms 2396 KB Output is correct
4 Correct 1 ms 2396 KB Output is correct
5 Correct 1 ms 2396 KB Output is correct
6 Correct 1 ms 2396 KB Output is correct
7 Correct 1 ms 2392 KB Output is correct
8 Correct 0 ms 2396 KB Output is correct
9 Correct 1 ms 2396 KB Output is correct
10 Correct 1 ms 2392 KB Output is correct
11 Correct 1 ms 2392 KB Output is correct
12 Correct 1 ms 2396 KB Output is correct
13 Correct 1 ms 2396 KB Output is correct
14 Correct 1 ms 2396 KB Output is correct
15 Correct 1 ms 2396 KB Output is correct
16 Correct 1 ms 2396 KB Output is correct
17 Correct 0 ms 2396 KB Output is correct
18 Correct 1 ms 2396 KB Output is correct
19 Correct 1 ms 2392 KB Output is correct
20 Correct 1 ms 2396 KB Output is correct
21 Correct 2 ms 2652 KB Output is correct
22 Correct 2 ms 2652 KB Output is correct
23 Correct 2 ms 2736 KB Output is correct
24 Correct 2 ms 2652 KB Output is correct
25 Correct 2 ms 2896 KB Output is correct
26 Correct 2 ms 2652 KB Output is correct
27 Correct 1 ms 2392 KB Output is correct
28 Correct 2 ms 2652 KB Output is correct
29 Correct 2 ms 2652 KB Output is correct
30 Correct 2 ms 2492 KB Output is correct
31 Correct 2 ms 2652 KB Output is correct
32 Correct 2 ms 2536 KB Output is correct
33 Correct 3 ms 2652 KB Output is correct
34 Correct 1 ms 2652 KB Output is correct
35 Correct 2 ms 2652 KB Output is correct
36 Correct 1 ms 2652 KB Output is correct
37 Correct 2 ms 2652 KB Output is correct
38 Correct 2 ms 2652 KB Output is correct
39 Correct 117 ms 14100 KB Output is correct
40 Correct 117 ms 15140 KB Output is correct
41 Correct 111 ms 14572 KB Output is correct
42 Correct 96 ms 15204 KB Output is correct
43 Correct 162 ms 16252 KB Output is correct
44 Correct 105 ms 14780 KB Output is correct
45 Correct 74 ms 31344 KB Output is correct
46 Correct 69 ms 45140 KB Output is correct
47 Correct 171 ms 25640 KB Output is correct
48 Correct 228 ms 98592 KB Output is correct
49 Correct 213 ms 96812 KB Output is correct
50 Correct 145 ms 25936 KB Output is correct
51 Correct 141 ms 25936 KB Output is correct
52 Correct 168 ms 25960 KB Output is correct
53 Correct 205 ms 25624 KB Output is correct
54 Correct 375 ms 51280 KB Output is correct
55 Correct 14 ms 4092 KB Output is correct
56 Correct 7 ms 3420 KB Output is correct
57 Correct 65 ms 14592 KB Output is correct
58 Correct 40 ms 14280 KB Output is correct
59 Correct 99 ms 51432 KB Output is correct
60 Correct 262 ms 97108 KB Output is correct
61 Correct 193 ms 28280 KB Output is correct
62 Correct 164 ms 25952 KB Output is correct
63 Correct 187 ms 25936 KB Output is correct
64 Correct 510 ms 41880 KB Output is correct
65 Correct 535 ms 51180 KB Output is correct
66 Correct 243 ms 91084 KB Output is correct
67 Correct 104 ms 25540 KB Output is correct
68 Correct 298 ms 45916 KB Output is correct
69 Correct 382 ms 52280 KB Output is correct
70 Correct 283 ms 44368 KB Output is correct